Kizuna

"Beautiful Ranmaru and sweet, serene Kei fell in love at first sight when they were just boys, and now that they're finally old enough, they're moving in together! College should be all about new experiences and freedom-- but what will the couple do when their home-sweet-home is invaded by the brash and spoiled Kai, Kei's half-brother? Is their relationship strong enough to weather a sudden storm of sibling rivalry?"--Publisher's web site.